3Com 2000 TR manual Checking the Power Supply

3-4CHAPTER 3: INSTALLING AND SETTING UP THE MODULE

Table 3-1Front Panel LEDs on the Switch 2000 TR

LED Name	Color/State	Indicates
MGMT	Green ON	Switch and TR-in-FE Module are oper-
(On the front of		ating normally.
the Switch)	Green fast	Software download taking place.
	flashing
	Green slow	The Switch and TR-in-FE Module are
	flashing	initializing (for example, undergoing
		a Power On Self Test).
	Yellow	The Switch failed its Power On Self
		Test (POST).

Table 3-2LEDs on the TR-in-FE Module Panel

LED Name	Color/State	Indicates
Full Duplex	Green ON	Full duplex link is on (port con-
(On TR-in-FE Mod-		figured for full duplex opera-
		tion).
ule)
	Green OFF	Half duplex link is on.
Port Status	Green ON	A link is present on the Ether-
(On TR-in-FE Mod-		net port.
ule)	Green OFF	The Link is not present on the
		Ethernet Port.

	Yellow flash- TR-in-FE Module failed its Power On
	ing	Self Test (POST).
	OFF	No power to the Switch.
Downlink	Green ON	TR-in-FE port enabled and a link is

TX	Yellow ON
(On TR-in-FE Mod-
ule)
	OFF

The TR-in-FE port is transmit- ting.

The TR-in-FE port is not trans- mitting frames.

Status		present.
(On front of the	Green flash-	Link present but TR-in-FE port dis-
Switch)
	ing	abled.
	Yellow ON	Switch has not recognized the
	Yellow flash-	TR-in-FE Module.
	ing	The TR-in-FE Module has failed the
		Power On Self Test (POST).

OFF

A link is not present on the TR-in-FE port.

The following table describes the LED functions on the TR-in-FE Module.

RX	Yellow ON	The TR-in-FE port is receiving
(On TR-in-FE Mod-		frames.
ule)	OFF	The TR-in-FE port is not receiv-
		ing incoming frames.
MDIX (copper only)	Green ON	RJ-45 configured as a cross-
		over.
	Green OFF	RJ-45 configured as a static
		connector.

Checking the Power Supply

Check the MGMT LED on the Switch. If the MGMT LED is not lit, there is a power supply problem. Try the following troubleshooting procedures, restarting the Switch after each step: